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D. How Green Tea Extract Affects Bladder Cancer Patients

Narrator: This is Science Today. It's estimated that in this year alone, over 60 thousand new cases of bladder cancer will be diagnosed. According to Jian Rao, a member of the UCLA Jonsson Cancer Center, one of the problems with bladder cancer treatment and management is it always comes back.

Rao: You can remove the cancer temporarily, but the cancer keeps coming back from different areas. If the cancer is superficial, you can keep just removing it. The problem is, some of the tumor may eventually become invasive and it becomes metastatic. That eventually will cause people to die.

Narrator: Rao recently led a bladder cancer study that found green tea extract has potential as an anti-cancer agent proving for the first time that it is able to target cancer cells while leaving healthy cells intact. Now the National Cancer Institute is funding a five-year human trial.

Rao: By that time, we can hopefully say conclusively whether the green tea really can help the patient or not.

Narrator: For Science Today, I'm Larissa Branin.